Final answer:
Inazuma is the location not covered by the Teyvat Travel Guide. The guide includes regions like Wuwang Hill, Mondstadt, and Dragonspine, but Inazuma may not have been added yet or may appear in a separate guide.
Step-by-step explanation:
The location that is not covered by the Teyvat Travel Guide is Inazuma. The Teyvat Travel Guide is an in-game item in the popular game Genshin Impact, providing lore and information about various regions within the game's world. The guide covers areas like Wuwang Hill, Mondstadt, and Dragonspine. However, as of the last update of my knowledge, Inazuma is not included in the travel guide. Inazuma is a more recently introduced region, and thus it may not have been added to the guide yet or it may be featured in a separate guide exclusive to that region.